Sunan dIIBT4 yana nufin Class II, Ƙididdiga mai tabbatar da fashewar rukuni B.
II | B | T4 | Gb | IP64 |
---|---|---|---|---|
Mine I | Methane | T1 450 ℃ | Ma Extremely high level of protection | IP64 |
T2 300 ℃ | ||||
Mb High level protection |
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T3 200 ℃ | ||||
I Surface Materials | Propane | Ga Extremely high level of protection |
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T4 135 ℃ | ||||
Ethylene | Gb High level protection |
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T5 100℃ | ||||
Hydrogen, Acetylene | Gc General level protection |
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T6 85 ℃ |
The prefix ‘d’ denotes a flameproof type of enclosure, an tsara shi ta yadda duk wani fashewa na ciki ya ƙunshi ba tare da lalata shinge ba da hana yaduwar fashewa a waje;
IIB yana ƙayyade nau'in gas ɗin da ake amfani da shi;
T4 signifies that the product’s maximum surface zafin jiki remains below 130°C.